You can fit around 65 rounds of .22lr ammo in a pill bottle. Depending on the pharmacy, some of the bottles are water-resistant. You could also put matches in there, cotton-balls soaked in Vaseline....you get the picture. You can paint the bottles a flat color, or, take a photo of a bunch of pills and print out and wrap around the inside of the bottle. To a casual observer, it would look like a bottle of pills (unless they picked it up).